The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2004
Filed:
Jul. 11, 2001
Jen-Cheng Chiang, Taipei, TW;
Behavior Tech Computer Corporation, Taipei, TW;
Abstract
The present invention discloses a method for compensating the laser energy of optical disk drives, which is used for adjusting and correcting the light source energy run-out for the laser light source of an optical disk drive, comprising the step of writing in the signal by several different laser illumination parameters when the optical disk drive is under the mode of data write; then using the bottom curve fit to take samples on a plurality of read signals; comparing the data at adjacent points to obtain the data of its relative slope; repeating the previous steps for several times to obtain a complete run-out factor and the maximum optimal laser illumination control parameter; and writing said maximum laser illumination value into the laser illumination control system of the optical disk drive such that the laser light source energy can be optimally compensated and controlled.